In this study we demonstrate the synthesis of quaternary semiconductor nanocrystals
of stannite Cu2FeSnS4/rhodostannite Cu2FeSn3S8 (CFTS) via mechanochemical route using Cu,
Fe, Sn and S elements as precursors in one-pot experiments. Methods of X-ray diffraction
(XRD), nitrogen adsorption, high-resolution transmission electron microscopy (HRTEM), scanning
transmission electron microscopy (STEM), energy-dispersive X-ray spectroscopy (EDX) and
X-ray photoelectron spectroscopy (XPS) were applied to characterize properties of the unique
nanostructures. Mechanochemical route of synthesis induced new phenomena like explosive
character of reaction, where three stages could be identified and the formation of nanostructures
5–10 nm in size. By using XPS method, Cu(I), Fe(II), Sn(IV) and S(-II) species were identified on the
surface of CFTS. The value of optical band gap 1.27 eV is optimal for semiconductors applicable as
absorbers in solar cells. The significant photocataly...
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In this study we demonstrate the synthesis of quaternary semiconductor nanocrystals
of stannite Cu2FeSnS4/rhodostannite Cu2FeSn3S8 (CFTS) via mechanochemical route using Cu,
Fe, Sn and S elements as precursors in one-pot experiments. Methods of X-ray diffraction
(XRD), nitrogen adsorption, high-resolution transmission electron microscopy (HRTEM), scanning
transmission electron microscopy (STEM), energy-dispersive X-ray spectroscopy (EDX) and
X-ray photoelectron spectroscopy (XPS) were applied to characterize properties of the unique
nanostructures. Mechanochemical route of synthesis induced new phenomena like explosive
character of reaction, where three stages could be identified and the formation of nanostructures
5–10 nm in size. By using XPS method, Cu(I), Fe(II), Sn(IV) and S(-II) species were identified on the
surface of CFTS. The value of optical band gap 1.27 eV is optimal for semiconductors applicable as
absorbers in solar cells. The significant photocatalytic activity of the CFTS nanocrystals was also
evidenced. The obtained results confirm the excellent properties of the quaternary semiconductor
nanocrystals synthesized from earth-abundant elements.
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